Light Propagation in Non-Trivial QED Vacua

Details Light Propagation in Non-Trivial QED Vacua Light Propagation in Non-Trivial QED Vacua

1998-04-16

arxiv.org/abs/hep-ph/9804303v1

Phys.Lett. B431 (1998) 420-429

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, REVTeX

Scientific paper

10.1016/S0370-2693(98)00572-3

Within the geometric optics approximation, we derive the light cone condition for a class of homogeneous non-trivial QED vacua using the effective action approach. Our result generalizes the ``unified formula'' suggested by Latorre, Pascual and Tarrach which turns out to be a low-energy limit. We calculate the velocity shifts induced by electromagnetic fields and finite temperature and especially analyze the high-energy limit consistent with the loop approximation.

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